The award-winning Katadyn Base Camp Pro foldable system is a step up from its little brother, the Gravity Camp, with 4 more liters of capacity. But you get the same ease of filtering water for a group: Hang, fill, start dinner and, before you know it, a flow rate of up to 2 liters per minute (thanks to the Ultra Flow Filter™) has filled the bag with reliably safe, clean water. Maintain the easy-to-clean filter protector to treat up to 1,500 liters of water sans pumping. Like the Gravity Camp 6L, add on the shower adaptor (sold separately) for the truly luxe outdoor shower experience.